Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 23
Articles | Volume 25, issue 23
https://doi.org/10.5194/acp-25-17725-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-17725-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 23
Research article
 | 
05 Dec 2025
Research article |  | 05 Dec 2025

Migrating diurnal tide anomalies during QBO disruptions in 2016 and 2020: morphology and mechanism

Shuai Liu, Guoying Jiang, Bingxian Luo, Xiao Liu, Jiyao Xu, Yajun Zhu, and Wen Yi

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Latest update: 17 Aug 2026
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Short summary
Disruptions of the Quasi-Biennial Oscillation modulate the migrating diurnal tide in the mesosphere and lower thermosphere. During the events, wavelengths and phases of the tide remain unchanged, but its amplitude strengthens. The variation of heating sources, dissipation, zonal wind latitude shear and gravity wave drag may contribute to the amplification of the tide amplitude. These features provide insight into the dynamical coupling of troposphere, stratosphere, mesosphere and lower thermosphere.
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